<template>
  <div class="users">
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片区域-->
    <el-card class="box-card">
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    @keyup.enter.native="getUserList"
                    clearable
                    @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表-->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改-->
            <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
              <el-button type="primary"
                         icon="el-icon-edit"
                         size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <!--删除-->
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete"
                         size="mini" @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>
            <!-- 分配-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting"
                         size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页-->
      <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[2, 5, 7, 10]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef"
               label-width="80px">
        <el-form-item label="用户名称" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="用户密码" prop="password">
          <el-input v-model="addForm.password" show-password></el-input>
        </el-form-item>
        <el-form-item label="用户邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="用户手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部按钮-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!--修改用户的对话框-->
    <el-dialog
            title="修改用户信息"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
        <el-form-item label="用户名称">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="用户邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="用户手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!--分配角色的对话框-->
    <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择" @change="roleChange">
            <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    name: "Users",
    data() {
      // 验证手机号规则
      const checkMobile = (rule, value, cb) => {
        // 验证手机号的正则表达式
        const regMobile = /^1[34578]\d{9}$/
        if (regMobile.test(value)) {
          return cb()
        }
        cb(new Error('请输入合法的手机号'))
      }
      return {
        // 获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前每页显示数据的数量
          pagesize: 2
        },
        userList: [],
        total: 0,
        // 控制添加对话框的显示与隐藏
        addDialogVisible: false,
        // 添加用户的表单数据
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        // 添加表单的验证对象
        addFormRules: {
          username: [
            {required: true, message: '请输入用户名称', trigger: 'blur'},
            {min: 3, max: 10, message: '用户名称长度为3~10个字符之间', trigger: 'blur'}
          ],
          password: [
            {required: true, message: '请输入用户密码', trigger: 'blur'},
            {min: 6, max: 15, message: '用户密码长度为6~15个字符之间', trigger: 'blur'}
          ],
          email: [
            {required: true, message: '请输入用户邮箱', trigger: 'blur'},
            {type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change']}
          ],
          mobile: [
            {required: true, message: '请输入用户手机', trigger: 'blur'},
            {validator: checkMobile, trigger: 'blur'}
          ]
        },
        // 控制修改对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到用户对象的信息
        editForm: {},
        // 修改用户信息校验规则对象
        editFormRules: {
          email: [
            {required: true, message: '请输入用户邮箱', trigger: 'blur'},
            {type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change']}
          ],
          mobile: [
            {required: true, message: '请输入用户手机', trigger: 'blur'},
            {validator: checkMobile, trigger: 'blur'}
          ]
        },
        // 控制分配角色的对话框显示与隐藏
        setRoleDialogVisible: false,
        // 需要被分配角色的用户信息
        userInfo: {},
        // 所有角色的数据列表
        rolesList: [],
        // 已选择的角色id值
        selectedRoleId: ''
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        const {data: res} = await this.$http.get('users', {params: this.queryInfo})
        if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
        this.userList = res.data.users
        this.total = res.data.total
      },
      // 监听 pagesize 改变事件
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        // 重新获取UserList
        this.getUserList()
      },
      // 监听 页码值 改变事件
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        // 重新获取UserList
        this.getUserList()
      },
      // 监听 switch 开关状态的改变
      userStateChanged(userInfo) {
        this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`).then(res => {
          if (res.data.meta.status !== 200) {
            userInfo.mg_state = !userInfo.mg_state
            return this.$message.error('更新用户状态失败')
          }
          this.$message.success('更新用户状态成功')
        })
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击按钮，添加新用户
      addUser() {
        this.$refs.addFormRef.validate(valid => {
          if (!valid) return
          // 可以发起添加用户的网络请求
          this.$http.post('users', this.addForm).then(res => {
            if (res.data.meta.status !== 201) return this.$message.error('添加用户失败!')
            this.$message.success('添加用户成功!')
            // 成功后，隐藏对话框
            this.addDialogVisible = false
            // 重新获取UserList
            this.getUserList()
          })
        })
      },
      // 展示编辑用户的对话框
      showEditDialog(id) {
        this.$http.get('users/' + id).then(res => {
          if (res.data.meta.status !== 200) return this.$message.error('查询用户信息失败!')
          this.editForm = res.data.data
        })
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(valid => {
          if (!valid) return
          // 发起修改用户信息请求
          this.$http.put('users/' + this.editForm.id,
              {email: this.editForm.email, mobile: this.editForm.mobile}).then(res => {
            if (res.data.meta.status !== 200) return this.$message.error('修改用户信息失败!')
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('修改用户信息成功！')
          })
        })
      },
      // 根据 id 删除对应用户
      async removeUserById(id) {
        // 弹框询问用户是否 删除
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

        // 用户确认删除，则返回字符串 confirm
        // 用户取消删除，则返回字符串 cancel
        if (confirmResult !== 'confirm') return this.$message.info('已取消删除该用户!')
        // 根据id删除对应用户
        const {data: res} = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除该用户失败!')
        this.$message.success('删除该用户成功!')
        // 刷新用户数据列表
        this.getUserList()
      },
      // 展示分配角色的对话框
      async setRole(userInfo) {
        this.userInfo = userInfo
        // console.log(this.userInfo);
        // 展示对话框之前获取所有角色的列表
        const {data: res} = await this.$http.get('roles')
        if (res.meta.status !== 200) return this.$message.error('获取角色列表失败!')
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      // 点击按钮分配角色
      async saveRoleInfo() {
        if (!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色！')
        }
        const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
        if (res.meta.status !== 200) {
          return this.$message.error('分配角色失败!')
        }
        this.$message.success('分配角色成功!')
        // 刷新
        this.getUserList()
        // 关闭对话框
        this.setRoleDialogVisible = false
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed() {
        this.selectedRoleId = ''
        this.userInfo = {}
      },
      // 测试 超级管理员不能修改
      roleChange() {
        // this.userInfo.role_name = this.rolesList[0].roleName
        // console.log(this.userInfo.role_name);
      }
    }
  }
</script>

<style scoped>

</style>
